Question

A pipe can fill a cistern in 9 hours. Due to a leak in its bottom, the cistern fills up in
10 hours. If the cistern is full, in how much time will it be emptied by the leak?​

Answer 1

Answer:

Here is your answer buddy..Hope it helps...

Step-by-step explanation:

In 1 hour, 1/9 part is full of cistern.

but it takes 10 hours means

1/10 part is full..

time taken to empty the cistern=

1/9- 1/10 = 1/ 90 part is full of tank

1/90 means 90 hours..

and that's your answer..